394
FZMY50 PGUM 071814
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
414 AM ChST Tue Sep 8 2026

Marianas Waters out to 40 nautical miles

PMZ150-080815-
414 AM ChST Tue Sep 8 2026

.Synopsis for Marianas Waters...
Light to gentle northerlies will turn northeast Wednesday night
then east Saturday. Combined seas of 3 to 5 ft today will
gradually increase, potentially reaching 4 to 6 ft on Saturday.
Scattered island-effect showers and isolated thunderstorms could
be a concern for Guam`s southern coastal waters this afternoon.

$$

PMZ151>154-080815-
MARIANAS COASTAL WATERS-
414 AM ChST Tue Sep 8 2026

.TODAY...North wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: West
4 ft at 8 seconds and north 2 ft at 4 seconds.
.TONIGHT...North wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
West 4 ft at 9 seconds and north 2 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.WEDNESDAY...North wind 10 kt. Seas 3 to 5 ft. Wave Detail: West
4 ft at 9 seconds, north 2 ft at 4 seconds and northeast 2 ft at
9 seconds. Scattered showers with isolated thunderstorms.
.WEDNESDAY NIGHT...Northeast wind 5 to 10 kt. Seas 3 to 5 ft.
Wave Detail: Northeast 3 ft at 9 seconds, northwest 3 ft at
9 seconds and northeast 2 ft at 4 seconds. Scattered showers with
isolated thunderstorms.
.THURSDAY AND FRIDAY...Northeast wind 5 to 10 kt. Seas 3 to
5 ft. Wave Detail: Northeast 4 ft at 8 seconds and northeast 3 ft
at 9 seconds.
.SATURDAY...East wind 5 kt. Seas 4 to 6 ft. Wave Detail: Northeast
4 ft at 9 seconds and west 4 ft at 10 seconds.

$$